In 2016, 733 confirmed or probable cases of anaplasmosis (13.4 cases per 100,000 population) were reported, up from the 613 cases reported in 2015. Despite annual fluctuations in reported cases, the overall trend is an increase in yearly case totals over time. Four hundred forty-nine (61%) cases reported were male. The median age of cases was 59 years (range, 2 to 97 years), 10 years older than the median age of Lyme disease cases. As is typical, most cases had illness onsets during the summer months, with 59% of cases reporting illness onsets in June and July. In 2016, 203 (28%) cases were hospitalized at some point for their infection, with a median duration of 4 days (range, 1 to 22 days).
Charts and Graphs
- Reported Cases of Anaplasmosis in Minnesota
by Year, 1996-2016 (PDF)
Graph showing the number of reported cases of anaplasmosis in Minnesota by year.
Most anaplasmosis cases report likely exposure to blacklegged ticks in the same east-central and north-central Minnesota counties where the risk of Lyme disease is greatest.
- High Risk Areas for Tickborne Diseases in Minnesota
A map that shows counties of highest tickborne disease risk in Minnesota.
Annual Summary Statistics
- Anaplasmosis, 2016
Minnesota Department of Health, Disease Control Newsletter;
Annual Summary of Communicable Diseases Reported to the Minnesota Department of Health, 2016
- Anaplasmosis, 2015
- Anaplasmosis, 2014
- Anaplasmosis, 2013
- Anaplasmosis, 2012
- Anaplasmosis, 2011
- Anaplasmosis, 2010
- Anaplasmosis, 2009
- Anaplasmosis, 2008
- Anaplasmosis, 2007
- Anaplasmosis, 2006
- Anaplasmosis, 2005
- Anaplasmosis, 2004
- Anaplasmosis Statistics
Maps, charts, tables, and reports from the CDC.